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Sillimanite (Al₂SiO₅) is an aluminosilicate mineral.
Typical Applications

Sillimanite is used to manufacture high alumina refractories, alumina bricks, high-temperature crucibles, and spark plugs. Some varieties are used in jewelry.

Packaging Options

Jars, pails


Sillimanite TSCA (SARA Title III) Status: Unknown
For further information, please call the EPA, Office of Chemical Safety and Pollution Prevention (OCSPP) at 202-564-2902
Sillimanite CAS Number: 12141-45-6

Sustainable Qualities

Sillimanite is a naturally occurring mineral considered sustainable due to its abundance and low environmental impact during extraction and processing. As a raw material, it has applications in the production of ceramics, refractories, and other high-temperature materials. Its high melting point and thermal stability make it an attractive option for steel and glass industries. Sillimanite is also recyclable and reusable, contributing to a circular economy.

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Select Specifications Available

  • Fine Powder 40 - 60
  • Industrial Grade Powder 180-200 Mesh


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